Rudder normal-force per typical classification-society rule - F_N = 132·A·v²·κ for full-spade rudders.
Formula
$$ F_N = 132 \cdot A_R \cdot v^2 \cdot \kappa $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $A_R$ | Rudder area | m² | rudder drawing |
| $v$ | Service speed | m/s | ship particulars |
| $\kappa$ | Profile coefficient | - | class rule table |
Sources
- DNV Pt.3 Ch.14.